TY - JOUR
T1 - Campo del Cielo iron meteorite
T2 - Sample shielding and meteoroid's preatmospheric size
AU - Liberman, R. G.
AU - Fernández Niello, J. O.
AU - Di Tada, M. L.
AU - Fifield, L. K.
AU - Masarik, J.
AU - Reedy, R. C.
PY - 2002/1/1
Y1 - 2002/1/1
N2 - Long-lived cosmogenic radioisotopes, 10Be, 26Al, 36Cl, 41Ca and 59Ni, have been measured in five samples from the Campo del Cielo iron meteorite by accelerator mass spectrometry (AMS). The 36Cl activities were significantly above the background. For the concentrations of the other four radioisotopes, only upper limits were obtained that were, however, consistent with the 36Cl result. The measured 36Cl activity allowed an estimate of the meteoroid's preatmospheric size: a radius larger than 300 cm and a mass of at least 840 000 kg. We conclude that this meteorite might be one of the largest meteorites to have been recovered.
AB - Long-lived cosmogenic radioisotopes, 10Be, 26Al, 36Cl, 41Ca and 59Ni, have been measured in five samples from the Campo del Cielo iron meteorite by accelerator mass spectrometry (AMS). The 36Cl activities were significantly above the background. For the concentrations of the other four radioisotopes, only upper limits were obtained that were, however, consistent with the 36Cl result. The measured 36Cl activity allowed an estimate of the meteoroid's preatmospheric size: a radius larger than 300 cm and a mass of at least 840 000 kg. We conclude that this meteorite might be one of the largest meteorites to have been recovered.
UR - http://www.scopus.com/inward/record.url?scp=0036215562&partnerID=8YFLogxK
U2 - 10.1111/j.1945-5100.2002.tb01111.x
DO - 10.1111/j.1945-5100.2002.tb01111.x
M3 - Article
SN - 1086-9379
VL - 37
SP - 295
EP - 300
JO - Meteoritics and Planetary Science
JF - Meteoritics and Planetary Science
IS - 2
ER -